Sur d’autres sites (3695)

• RTSP to file using IMediaTools errors

  4 décembre 2014, par predy23

  Im trying to save a streaming with RTSP to file with IMediaTools. If I use the local file path of the video in the IMediaReader, it goes nice without errors, but if i make a RTSP streaming of the video and I use the RTSP direction in the IMediaReader i have a lot of errors like this one :

  ERROR org.ffmpeg - [h264 error while decoding MB 50 44, bytestream (td)

  I can open the output file but it have a lot of blurry zones and its not smooth.

  This is my code :

      public static void main(String[] args)  {
  
      // TODO code application logic here
  
     //create a media reader
  
      System.out.println("starting video conversion..");
  
  
  
      // create a media reader
  
      IMediaReader reader = ToolFactory.makeReader(inputFilename);
  
      IMediaWriter writer = ToolFactory.makeWriter(outputFilename, reader);
  
  
  
      // add a debug listener to the writer to see media writer events
  
      writer.addListener(ToolFactory.makeDebugListener());
  
      reader.addListener(writer);
  
  
  
      // read and decode packets from the source file and
  
      // and dispatch decoded audio and video to the writer
  
      while (true) {
  
          if (reader.readPacket() != null) {
  
  
  
              break;
  
          }
  
      }
  
  
  
      reader.close();
  
      writer.close();
  
      System.out.println("video conversion finished..");
  
  }

• Touble when excuting the same ffmpeg command for many times

  4 janvier 2015, par morndust

  Decription

  when using the same ffmpeg command for a couple of times, some of those will succeed, but, some of those would failed, ffmpeg report Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height or Invalid data found when processing input error.

  Input

  ffprobe

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/2137b8d42dcf4607a625755994133e69':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.4.101
  
    Duration: 00:01:00.02, start: 0.021333, bitrate: N/A
  
      Chapter #0.0: start 0.000000, end 60.000000
  
      Metadata:
  
        title           : 00:00:00.000
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x798 [SAR 1:1 DAR 320:133], 3255 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 192 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:2(eng): Subtitle: mov_text (text / 0x74786574), 0 kb/s
  
      Metadata:
  
        handler_name    : SubtitleHandler

  Command

  /usr/local/bin/ffmpeg -i /tmp/2137b8d42dcf4607a625755994133e69 -f mp4 -b:v 3000k -r 24.0 -map_metadata -1 -vf scale=50:50 -y /tmp/foo.mp4

  Detail

  when i excute same command above 10 times, error would occur like 3 - 4 times.

  At the end, thanks for reading anyway, any answer would be appriciated.

• FFMPEG Command in Android Failing to Execute

  15 janvier 2015, par Zoe

  I’m trying to execute ffmpeg commands through an android app I’m developing.

  I found this post which has been somewhat useful :
  Problems with ffmpeg command line on android

  and I downloaded a static build of ffmpeg from here : http://ffmpeg.gusari.org/static/

  The problem is, when this code runs

  public void merge_video(){
  
  
  
  
  
        String[] ffmpegCommand = new String[5];
  
        ffmpegCommand[0] = "/data/data/com.example.zovideo/ffmpeg";
  
        ffmpegCommand[1] = "-i";
  
        ffmpegCommand[2] = "concat:storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4|storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4";
  
        ffmpegCommand[3] = "copy";
  
        ffmpegCommand[4] = "storage/emulated/0/DCIM/ZoVideo/Output.mp4";  
  
  
  
        try {
  
            Process ffmpegProcess = new ProcessBuilder(ffmpegCommand).redirectErrorStream(true).start();
  
  
  
            String line;
  
            BufferedReader reader = new BufferedReader(new InputStreamReader(ffmpegProcess.getInputStream()));
  
            Log.d(null, "*******Starting FFMPEG");
  
  
  
            while((line = reader.readLine())!=null){
  
  
  
                Log.d(null, "***"+line+"***"); 
  
            }
  
            Log.d(null,"****ending FFMPEG****");
  
  
  
      } catch (IOException e) {
  
          e.printStackTrace();
  
      }
  
    }

  It fails when trying to start the process with

  Java.io.IOException: Error running exec(). Command: [/data/data/com.example.zovideo/ffmpeg, -i, concat:storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4|storage/emulated/0/DCIM/Camera/VID30141106_211509.mp4, copy, storage/emulated/0/DCIM/ZoVideo/Output.mp4] Working Directory: null Environment: [ANDROID_ROOT=/system, EMULATED_STORAGE_SOURCE=/mnt/shell/emulated, LOOP_MOUNTPOINT=/mnt/obb, LD_PRELOAD=libsigchain.so, ANDROID_BOOTLOGO=1, EMULATED_STORAGE_TARGET=/storage/emulated, EXTERNAL_STORAGE=/storage/emulated/legacy, SYSTEMSERVERCLASSPATH=/system/framework/services.jar:/system/framework/ethernet-service.jar:/system/framework/wifi-service.jar, ANDROID_SOCKET_zygote=10, PATH=/sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin, ANDROID_DATA=/data, ANDROID_ASSETS=/system/app, ASEC_MOUNTPOINT=/mnt/asec, BOOTCLASSPATH=/system/framework/core-libart.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/apache-xml.jar, ANDROID_PROPERTY_WORKSPACE=9,0, ANDROID_STORAGE=/storage]

  I understand from the stackoverflow post I mentioned above that the ffmpeg static build needs to be on my device otherwise my app cannot use it.

  However I’m unsure how to get it in the /data/data/com.example.zovideo folder as needed.

  I have done is download the latest static ffmpeg build from http://ffmpeg.gusari.org/static/ and copied it into my libs/armeabi and libs/armeabi-v7a folders but this obviously hasn’t succeeded in getting into the data/data folder when my app is installed onto my device.
  (I feel like I’m being an idiot by copy/pasting the files but I don’t know what else to do. I don’t know how to compile it myself - I have compiled ffmpeg using a Roman10 tutorial but this produces .so files which from which I understand is not what I need)

  So I’m a little stuck.
  Any advice is greatly appreciated. Thanks